Dental instrument.



A. SCHUTT.

DENTAL INSTI IUIV IENT. APPLlCATION mu) MAY 21. 1915.

Patented J mi. 18, 1916.

cm. WASHINGTON, D. c.

ALEXANDER soHiITT, or BISMARCK, non'rn, nAKo'rri.

DENTAL INST U ENT.

To all whom it magi concern r Be it known that I, ALEXANDER SoHU'r'r acitizen of the United States, residing at Bismarck, in the county ofBurleigh, State of l OI'th Dakota, have invented certainneW and usefulImprovements in Dental Instr-uments; and I do hereby declare the following to be a full, clear, and exact description details of constructionandin the arrange ment and combination of parts to be hereinafter morefully described and particularly pointed out in the appended claims. IIn describingthe inventionin detail reference will be had to theaccompanying draw1n, ;s wherein like characters of refer-- ence denotecorresponding parts in the several views, and in which Figure 1 is afront view of the instrument partly in section; Fig. 2, a side view ofsame: and 8, a top view.

Referring to the drawings the instrument is shown as comprising a frameA which includes a top part 10, a bottom member 11, and side parts 12and 13. The top part 10 is curved to conform substantially with thecurvature of the upper lip, while the bottom A has formed integraltherewith a plurality of projections 14; the outer ends, of whichterminate in heads 15. These projections 14 are designed to haveattached thereto the rubber dam which is employed frequently in dentaloperations. vided with a transverse passage 16in which is slidablymounted a pin or rod 17,. The

inner end of the rod 171-is enlarged as at 18 whereby movement of therod 17 outwardly is limited. The outer end of the rod-17 is providedwith ahead 19 and encircling the rod is a spring 20 oneendof which bearsagainst the part 13 and the other end against the head 19 and normallyholds the rod 17 at the limit of its outward movement. The

inner end of the rod 17 is provided with an eye 21 and secured throughthis eye is a loop dental work.

The frame The side part 13 is prov S pccificatioii of Letters Patent.Patented Jan,18, 1 Application filed May 21, 1915. Seria1No.29,G4 7.

of fine wire 22. Formedin the member 12,

in line; with the passage 16 is a passage 23 and shdably engaged in thispassage is a screw 21-. Threaded on the screw 24 inwardly of the part 12is a disk 25 while a corresponding disk 26 is threaded onsaid in thedesired manner it will be apparent that the teeth can be separated. Bycrossing' the loops 22 and 28 and engaging same over adjacent teeth helatter can be drawn together and under such conditions the wire loopswill protect the gums from abrasive.

strip used in polishing fillings.

Slidably mounted on the part 11 is a sleeve 29 which carries a set screw30 adapted to impinge against the part 11 to lock the sleeve in adesired adjustment thereon, it being noted in this connection that thesleeve 29 is rotatableon the part 11 as well as slidable. Threaded inthe sleeve 29 at right angles to the longitudinal axis thereof is a stem81 which has fixed on its free end a mirror 32 of the type usuallyemployed. in "When the device is applied the mirror will show theinnersurface of the teeth, deflect the light against the tooth while workingthereon, assist in keeping the mouth openand assist in keeping thetongue away from the teeth. The frame A can be applied in such. manneras to hold the lips back. and render the. useof a rubber damunnecessary. I i I While oneform of carrying the invention into practicehas been illustrated and described it will be obvious that variouschanges in proportion and arrangement of parts can be resorted towithout departing from the spirit of the invention as set forth in theappended claims, j I

What is claimed is v i 1. A dental instrument comprising a posite sidesof said frame, and wire loops secured on the inner ends of said membersrespectively. I

2. A. dental instrument comprising a frame. members adjustable inopposite sides of said frame, wire loops secured to the frame, membersadjustably mounted in op- I I j 1,16 ,911

inner En of'saidmmbers respectively, and. tho frame, and wire loopsslired 'onthe a mirror mountedionfthe bottom member 'of inner end ofthemembjer'respectively. 13

-53 dental iih'strliment comprising the frame'for rqtatable'andslidableadjusb "I11 testimony whereofyI afiix my signa-- ,Inent. 1 turo, inithoresence of two Witnesses;v

ALEXANDER SCHUTT.

frame, a; pluralityof lateral projections} on t WitIlGSSQSL 7 ,7 "theframe having headed outer ends, mem o R. PEMARD'EN, ,bers' gdj ustablymounted in opposite'sides of a =13. KITCHEL ALLEN SWOBTI-If Copiesofithis paitentj may be obtained for five cents each, by addrgssing theF Commissioner. of l atents,

Washifigton; D G), J

